Car-truck



(No Model.) zsneets-sheet 1. W. H. H. SISUM.

` CAR TRUCK.

Patented Sept. 17, 1889.

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(No Model.) 2 Sheefs-Sh'eet 2. W. H. H. SISUM.

CAR TRUCK.

No. 411,068. Patented Sept'. 17, 1889.

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` UNITED STATES PATENT OFFICE.

VILLIAM H. H. SISUM, OF BROOKLYN, NEW YORK.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 411,068, dated September 17, 1889. Application filed September 19, 1888. Serial No. 285,826. (No model.)

To all whom it may concern.-

Be it known that 1, WlLLIAM I-I. H. SIsUM, of Brooklyn, in Kings county, and the State of New York, haveinvented a certain new and useful Improvement in Car-Trucks, of which the following is a specication.

I will describe a car-truck embodying my improvement, and then point out the novel features in the claims.

In the accompanying drawings, Figure 1 is a plan or top view of a car-truck embodying my improvement. Fig. 2 is a side elevation of the same. Fig. 3 is a transverse vertical section taken as indicated by the dotted line a: fr, Fig. 1. Fig. 4 is a vertical section taken as indicated bythe dotted line g/ y, Fig. 3. Fig. 5 is a vertical section taken upon the line e e, Fig. 2. Fig. 6 is a horizontal section taken on the line o o, Fig. 4t. Fig. 7 is a perspective View of a stirrup comprised in my improvements. Figs. 4, 5, 6, and 7 are made to a larger scale than Figs. l, 2, and 3.

Similar letters of reference designate correspending parts in all the iigures.

A A2 A3; designate threev pairs of wheels, which may be of any suitable construction, afiixed to their axles in the usual manner. The journals of the axles iit in bearings vB, arranged in oil-boxes C. The oil-boxes C extend into pedestal-jaws D D2 D3. The pedestal-jaws D D2 D3 on one side of the oartruck are comprised in a frame E, and those on the other side are comprised in another and similar frame E. Each frame E has a bar e extending lengthwise of it above the pedestal-jaws, and a bar e2 extending lengthwise of it below the pedestal-jaws. Between the bars e e2 columns e3 e4 are arranged. It will be seen that the columns c3 are located about midway between the pedestal-jaws D and the pedestal-jaws D2, and that the columns e4 occupy a corresponding position between the pedestal-jaws D2 and the pedestaljaws D5. A brace-bar e5 extends from one end of the longitudinal bar e', thence along the under side of this bar past the pedestaljaws D', thence obliquely downward to the longitudinal bar c2 near the columns e3, thence along the upper side of the bar e2 beneath the columns e3, thence upwardlyin an oblique direction to the longitudinal bar e', thence along the under side of this longitudinal bar past the pedestal-jaws D2, thence obliquely downward to the longitudinal bar c2, thence along the upper side of the latter beneath the columns c, thence obliquely upward to the under side of the longitudinal bar c', and thence along the under side of the latter to its end and up against the end.r

The longitudinal bars e e2, the pedestal- 6o jaws D', and the brace-bar e5 of each frame are secured together by bolts d', extending transversely through the longitudinal bars and brace-bar and lengthwise through the pedestal-jaws. maybe well understood by reference to Fig. 4.

The pedestal-jaws D2 are secured to the longitudinal bars e e2 and the brace-bar e5 by bolts d2, applied similarly to the bolts d.

The longitudinal bars e e2, the brace-bar e5.,/7o

and the pedestaljaws D3 are secured t0- gether by similar bolts d3. Similar bolts e secure the columns e3 and the columns e4 to the longitudinal bars and brace-bar. The

side frames E are connected by cross-bars G,

which may be bolted or otherwise fastened to the longitudinal bars e.

H designates bolsters which are secured together by bars I I extending lengthwise of the truck. The bars I I are arranged in 8o pairs. portion and inclined end portions. horizontal portions of the bars I I of a pair are opposite, and the inclined end portions Each bar of a pair has a horizontal converge and are together bolted or other- Each. bolster Il is made of' three parts h h2 95 h3 and of any suitable material. rlrhe part h of each bolster H is secured to the brace-bar e5 and to the lower longitudinal bars e2 of the two frames E. As shown, the lower part h of each bolster H is made of an I-beam or Ico girder and notched on the under side near each end to embrace the bars e2 e5, its iianges fitting between the columns e3 e4. The part h2 of each bolster I-I is shown as consisting of This feature of construction 65 The It will be seen that the three 9oV a tronglbshaped or U-shaped beam, having its ends extended between the pairs or columns e3 c". The sides of this part 7c. near the ends are provided with lugs or jaws j, 5 adapted to embrace the adjacent columns. These jaws embracing the columns preclude any endwise movement of the part 7L`l independentlyv of the columns, but leave the part l12 free to rise and fall between the pairs of columns. 'lhe part hi of each bolster H is shown as consisting of a trough-shaped or U-shaped beam, provided with jaws j on the sides near the ends embracing the columns. This part of each of said holsters may therefore rise and fall while secured against endwise movement independently of the columns. The part 7L3 of cach bolster ll is shown as having a truss-bar t combined with it. It is to this part 71.1 of each bolster ll that the bars I are secured. The several parts h 71,2 h3 of each bolster lI are unconnected save through the interposition of springs K K2. The springs K rest upon the lower part 71' and support the part 712. rlhe latter supports the springs l?, and these springs sustain the part h, The springs may be seated in the parts of the bolster ll in any approved manner.

Itis advantageous to employ two sets of springs, with a divided bolster, as described, because the resilience afforded by a given length of springs maybe obtained and yet the springs may individually be made of such lengths as to be free from any serious tendency to deflection out of a vertical line.

It remains for me to describe the manner in which the frames E are supported. The journals may be of ordinary form. This is also true of the bearings 13 and oil-boxes C. Keys L are interposed between the tops of the bearings and the tops of the oil-boxes.

Abovethe oil-boxes are rockers M, one for each box. Each box and rocker have combined with them a stirrup N. Above each stirrup are springs O, and these springs take the strain from the frames Il to the stirrups.

Each of the rockers M (see particularlyv Fig. 5) is approximately Tshaped. Its upper portion has an extended arcshaped surface m, upon which the cross-bar n of the adjacent stirrup Nrests. The ends of this upper portion beyond the arc-shaped. surface 'la are extended upwardly to form projections 1111', which may limit the action of the rocker by cont-acting with the cross-bar of the stirrup. The lower part of each rocker is provided with abottoin areshaped surface m2, which bears upon the top of the adjacent oil-box C. Each oil-box C is provided with two projections c' c2 from its top, and between these two proj eetions the lower part of the rocker werks.

Each stirrup N consists of two upright parts or bars a n and a cross-bar y11. The cross-bar extends between the upright bars n fneat a short. distance from the upper ends of the latter. All the parts may be formed integral. The opposite sides of each pair of pedestal-jaws l) l)2 Dgarc provided with ver tical grooves (I. The upright bars n n2 of the sti rrup lit in these grooves and the stirrup is therefore free to work up and down within the pedestal-jaws. Each rocker is provided on its sides with lugs m3, which have curved side surfaces and extend into the slots 11 of the corresponding stirrup. The curvature of the side surfaces of the lugs enables the rockers to rock or oscillate, despite the fact that the lugs extend into the slots n. The stirrups being engaged in the grooves of the pedestal-jaws cannot move out of the pedestal-jaws, although they are free to move up and down within the same, or to permit of the upward and downward movement of the pedestal-jaws relatively to them. As the ln gs of the rockers engage with the stirrups, the rockers are maintained in place, altlioughallowed to rock or oscillate.

rl`he springs O may be secured in place in any way. I have shown two pairs or sets of spring., as arranged between each pair of pedestal-jaws. On the top of the cross-bar of the stirrnp belonging to each pair of pedestal-jaws I have shown a seat I), consisting of a liat plate having upwardly-extending pinlike projections entering the coils of the springs. The seat is maintained in position upon the cross-bar of the stirrup by flanges d?, extending from the pedestal-jaws. Simi lar sprineeseats P are shown as arranged above the springs and similarly retained in place by flanges di.

W hat I claim as my invention, and desire to secure by Letters Patent, is

l. In a eartruck, the combination, with side frames provided with bearings, of a bolster made in three parts, comprising upper, middle, and lower parts, and springs arranged between the lower and middle parts, and other springs arranged in pairs between the middle and upper parts, substantially as specified.

2. In a cantruck, the combination, with side frames provided with bearings for three pairs of wheels, of two bolsters connected together and severally composed of three parts, comprising an upper, a central, and a lower part, springs arranged between the lower and middle parts of each of said holsters, and springs arranged between the middle and upper parts of each bolster, substantially as specified.

3. In a car-truck, the combination, with frames provided with bearings, of a bolster comprising an upper, a middle, and a lower beam, spiral springs arranged near the ends between the lower and middle beams, and other spiral springs between the middle and upper beams, substantially as specified.

4. In a car-truck, the bolster, comprising the upper, the middle, andthe lower portions, extending across the truck, and spiral springs arranged between the upper and middle por- IOO IIO

tions, and other spiral springs arranged between the middle and lower portions, substantially as specified.

5. In a car-truck, the combination of a side frame having two longitudinal bars, one above the other, and pedestal-jaws consisting of pieces tted and secured between the two longitudinal bars by means of bolts extending transversely through the said bars and lengthwise through the pedestal-jaws, substantially as specied.

6. In a car-truck, the combination, with a side frame and an oil-box working within pedestal-jaws comprised in said side frame, of a rocker supported upon the oil-box, and a stirrup supported upon the rocker and engaged with said pedestal-j aws, substantially as specified.

7. In a car-truck, the combination, with a side frame and an oil-box Workin g within pedestal-jaws comprised in said side frame, of 'a rocker supported upon the oil-box, and a stirrup consisting of two upright bars and a cross-bar, the cross-bar resting upon the rocker and the upright bars being engaged with the pedestal-j aws, substantially as specifled.

8. In a car-truck, the combination, with a side frame and an oil-box working within pedestal-j aws comprised in said side frame, of a rocker supported upon the oil-box, and a stirrup consisting of a cross-bar resting upon the rocker, two upright bars engaging with the pedestal-jaws and provided with vertical slots receiving lugs with which the rocker is provided, substantially as specified.

WM. H. H. SISUM.

Vitnesses:

D. I-I. DRIscoLL, M. J. RoAoH. 

